Stopped birth control

Hey ladies. I was on birth control for 3-4 months to regulate my cycles. The doctor took me off this month but I missed a few pills the prior month. My last period was 11-10-19 to 11-17-19 and I haven't started my period yet. Could it be possible I'm pregnant or could my cycles just be delayed due to him taking me off of the birth control. I have been experiencing really dry mouth like I can't get enough to drink and I've been having this odd feeling in my stomach like the need to throw up but never do.